We tracked down the biggest zoom lenses ever produced for normal photography purposes. From legendary Nikon 1200-1700mm to Sigma’s Green Monster. From Canon 1200mm bazooka to World’s most expensive Leica 1600mm to world’s largest Canon 5200mm. Its very obvious that none of them are cheap. They look like missile launching units and to buy them you will have to blow your bank account. Even then the chances of getting them is extremely low.